LOAFERCREEK SERIES

Established Series

FJP/DWB

2016-12-15

Climate summaries (PRISM). Climate summaries (PRISM).

The Loafercreek series consists of moderately deep, well drained soils that formed in colluvium and residuum from metavolcanic rocks, mainly greenschist. Loafercreek soils are on ridge tops and side slopes on metamorphic Sierra Nevada foothills. Slopes range from 1 to 90 percent. The mean annual precipitation is about 30 inches, (762 mm) and the mean annual temperature is about 61 degrees F, (16 degrees C).

TAXONOMIC CLASS

Fine-loamy, mixed, superactive, thermic Ultic Haploxeralfs

TYPICAL PEDON

Most likely horizonation by proportional odds logistic regression. (NASIS pedons) Most likely horizonation by proportional odds logistic regression. (NASIS pedons)

Oi–0 to 0.5 inches, (0 to 1 cm); leaves, needles, duff

Range in soil texture for the A horizon (NASIS pedons) Range in soil texture for the A horizon (NASIS pedons)

A–0.5 to 2 inches, (1 to 5 cm); reddish brown (5YR 5/4) gravelly loam, reddish brown (5YR 4/3) moist; 17 percent clay; moderate fine subangular blocky parting to moderate fine granular structure; hard, friable, nonsticky, slightly plastic; common very fine roots; many very fine irregular pores; 20 percent subangular metavolcanic gravel; moderately acid, pH 6.1 by Hellige-Truog; abrupt wavy boundary. (1 to 3 inches, (3 to 8 cm) thick)

BAt–2 to 6 inches, (5 to 15 cm); reddish brown (5YR 5/4) gravelly loam, reddish brown (5YR 4/3) moist; 17 percent clay; moderate medium subangular blocky structure; hard, friable, nonsticky, slightly plastic; few fine roots and common very fine roots; common very fine tubular pores; 20 percent discontinuous faint clay films on faces of peds; 25 percent subangular metavolcanic gravel; slightly acid, pH 6.2 by Hellige-Truog; clear smooth boundary. (3 to 7 inches, (8 to 18 cm) thick)

Range in soil texture for the Bt1 horizon (NASIS pedons) Range in soil texture for the Bt1 horizon (NASIS pedons)

Bt1–6 to 12 inches, (15 to 30 cm); yellowish red (5YR 5/6) loam, dark reddish brown (5YR 3/4) moist; 20 percent clay; moderate medium subangular blocky structure; hard, friable, nonsticky, slightly plastic; common fine roots and few medium and coarse roots; common very fine tubular pores; 30 percent discontinuous distinct clay films on faces of peds and on surfaces along pores; 10 percent subangular metavolcanic gravel; slightly acid, pH 6.2 by Hellige-Truog; clear wavy boundary. (5 to 11 inches, (13 to 28 cm) thick)

Range in soil texture for the Bt2 horizon (NASIS pedons) Range in soil texture for the Bt2 horizon (NASIS pedons)

Bt2–12 to 23 inches, (30 to 58 cm); yellowish red (5YR 5/6) gravelly loam, yellowish red (5YR 4/6) moist; 24 percent clay; moderate fine subangular blocky structure; hard, friable, slightly sticky, moderately plastic; few fine, medium and coarse roots; many very fine tubular pores; 30 percent discontinuous distinct clay films on faces of peds and on surfaces along pores; 5 percent subangular metavolcanic cobbles, and 20 percent subangular metavolcanic gravel; slightly acid, pH 6.3 by Hellige-Truog; gradual wavy boundary. (3 to 11 inches, (8 to 28 cm) thick)

Range in soil texture for the Bt3 horizon (NASIS pedons) Range in soil texture for the Bt3 horizon (NASIS pedons)

Bt3–23 to 31 inches, (58 to 79 cm); yellowish red (5YR 5/6) gravelly silt loam, yellowish red (5YR 4/6) moist; 22 percent clay; moderate fine subangular blocky structure; hard, firm, slightly sticky, moderately plastic; common fine roots and few medium and coarse roots; common very fine tubular pores; 30 percent discontinuous distinct clay films on faces of peds and on surfaces along pores; 20 percent subangular metavolcanic gravel; slightly acid, pH 6.2 by Hellige-Truog; abrupt wavy boundary. (5 to 8 inches, (13 to 20 cm) thick)

Crt–31 to 42 inches, (79 to 107 cm); weathered moderately cemented greenschist; few fine roots; 60 percent continuous prominent clay films on rock fragments; abrupt wavy boundary. (5 to 11 inches, (13 to 28) thick)

DISTRIBUTION AND EXTENT

Extent of the Loafercreek soil series (SSURGO) Extent of the Loafercreek soil series (SSURGO)

Butte County, California and occurs in (M261Fb) Lower Foothills Metamorphic Belt subsection of the (M261F) Sierra Nevada Foothills section. MLRA 18 - Sierra Nevada Foothills. The soils are moderately extensive.

TYPE LOCATION

Butte County, California; about 4.5 miles northeast of Wyandotte, California, approximately 2450 feet south and 1400 feet east of the northwest corner of Section 8, Township 19 N., Range 5 E., 39 degrees, 31 minutes, 08.28 seconds North latitude and 121 degrees, 26 minutes, 28.49 seconds West longitude: NAD83-U.S.G.S. Quad: Oroville Dam, California.

RANGE IN CHARACTERISTICS

Range in horizon thickness (NASIS pedons) Range in horizon thickness (NASIS pedons)

Laboratory characterization data (KSSL) Laboratory characterization data (KSSL)

Depth to paralithic bedrock is 20 to 40 inches, (51 to 102 cm). The mean annual soil temperature is 59 to 65 degrees F, (15 to 18 degrees C). The soil moisture control section is dry in all parts from about June 1 to October 15 (about 150 days). The particle-size control section averages 24 to 33 percent clay and 5 to 33 percent rock fragments, mostly gravel. Mineralogy is mixed. Rock fragments on the surface range from 0 to 25 percent gravel, 0 to 10 percent cobbles and 0 to 10 percent stones. Surface and subsoil horizons have 40 to 50 percent silt.

Soil color range (NASIS pedons) Soil color range (NASIS pedons)

The A horizon dry color is 7.5YR 4/6, 5/4, 5/6, 5YR 4/4, 4/6 or 5/4. Moist color is 7.5YR 3/4, 4/4, 5YR 3/4 or 4/3. Texture is loam, gravelly loam, with high silt content, or silt loam. Clay content ranges from 14 to 22 percent. Rock fragments range from 3 to 20 percent gravel. Base saturation by sum of cations ranges from 60 to 70 percent. Organic matter ranges from 5 to 10 percent. Reaction ranges from strongly acid to neutral.

The BAt horizon dry color is 7.5YR 4/6, 5/6, 5YR 4/6, 5/4, 5/6 or 5/8. Moist color is 7.5YR 3/4, 4/4, 5YR 4/3, 4/4, 4/6 or 2.5YR 4/4. Texture is loam, gravelly loam, with high silt content, or silt loam. Clay content ranges from 15 to 24 percent. Rock fragments range from 3 to 30 percent gravel and 0 to 5 percent cobbles. Base saturation by sum of cations ranges from 65 to 73 percent. Organic matter ranges from 1 to 4 percent. Reaction ranges from strongly acid to neutral.

Soil color signature (NASIS pedons) Soil color signature (NASIS pedons)

The upper Bt horizon dry color is 7.5YR 5/6, 5YR 4/6, 5/6 or 2.5YR 4/6. Moist color is 5YR 3/4, 4/4, 4/6 or 2.5YR 3/6. Texture is loam, gravelly loam, clay loam or gravelly clay loam, with high silt content. Clay content ranges from 18 to 30 percent. Rock fragments range from 5 to 25 percent gravel and 0 to 5 percent cobbles. Base saturation by sum of cations ranges from 65 to 73 percent. Organic matter ranges from 0.5 to 2.0 percent. Reaction ranges from moderately acid to neutral.

Coarse fragment summary (NASIS pedons) Coarse fragment summary (NASIS pedons)

The lower Bt horizon dry color is 7.5YR 4/6, 5/6, 5YR 4/6 or 5/6. Moist color is 7.5YR 4/4, 4/6, 5YR 4/3, 4/4, 4/6, 2.5YR 3/6 or 4/6. Texture is loam, gravelly loam, clay loam or gravelly clay loam. Clay content ranges from 18 to 30 percent. Rock fragments range from 5 to 30 percent gravel and 0 to 10 percent cobbles. Base saturation by sum of cations ranges from 74 to 85 percent. Organic matter ranges from 0.5 to 1.5 percent. Reaction ranges from moderately acid to neutral.

genhz gravel channers cobbles flagstones stones boulders fine earth
A 6 0 0 0 0 0 94
Bt1 9 0 1 0 0 0 90
Bt2 12 0 3 0 0 0 84
Bt3 10 0 2 0 0 0 88
Cr 0 0 0 0 0 0 100
R 0 0 0 0 0 0 100

COMPETING SERIES

These are the Bearwallow, Churn, Mounthope, Sommeyflat and Wisheylu series. Bearwallow soils do not have high silt content. Churn soils have a hue of 10YR. Mounthope soils are deep. Sommeyflat soils are very deep. Wisheylu soils have hues of 2.5YR and 7.5YR.

GEOGRAPHIC SETTING

Hillslope position proportions (SSURGO) Hillslope position proportions (SSURGO)

Geomorphic component proportions (SSURGO) Geomorphic component proportions (SSURGO)

Loafercreek soils are on ridge tops and side slopes on metamorphic Sierra Nevada foothills. Slopes range from 1 to 90 percent. These soils formed in colluvium and residuum weathered from metavolcanic rocks, mainly greenschist. Elevation is 200 to 1600 feet, (61 to 488 m). Mean annual precipitation is 28 to 40 inches, (711 to 1016 mm). The mean annual temperature is 57 to 63 degrees F, (14 to 17 degrees C). Frost free season is 230 to 260 days.

(NASIS pedons)
Concave Convex Linear
Concave 0.00 0.02 0.02
Convex 0.02 0.16 0.07
Linear 0.05 0.16 0.50

GEOGRAPHICALLY ASSOCIATED SOILS

Co-occurence with components that exist in the same map units as Loafercreek (SSURGO) Co-occurence with components that exist in the same map units as Loafercreek (SSURGO)

These are the competing Exchequer and Sobrante soils and the Argonaut and Whiterock soils. Argonaut soils have argillic horizons and Whiterock soils lack reddish colors in hues of 7.5YR and 5YR.

Taxonomic breakdown of components that exist in the same map units as Loafercreek (SSURGO) Taxonomic breakdown of components that exist in the same map units as Loafercreek (SSURGO)

DRAINAGE AND PERMEABILITY

Well drained; high runoff; moderate to moderately rapid saturated hydraulic conductivity in the A and BAt horizons and moderate to moderately slow in the Bt horizon.

(NASIS pedons)
Very poorly drained Poorly drained Somewhat poorly drained Moderately well drained Well drained Somewhat excessively drained Excessively drained No.Data N.pedons
0.00 0.00 0.00 0.05 0.87 0.00 0.00 0.08 62

USE AND VEGETATION

This soil is used for livestock grazing, home site development, wildlife habitat, watershed and recreation. Vegetation is blue oak, scattered foothill pine, interior live oak, toyon, whiteleaf manzanita, buckbrush, Pacific poison oak, annual grasses and forbs.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE

Davis, California

SERIES ESTABLISHED

Butte County, California 2005. Source of name is from Loafer Creek on the Oroville Dam Quadrangle.

REMARKS

These soils were previously mapped as Aiken clay loam (Ac) in the Soil Survey of Oroville Area, California 1926.

DIAGNOSTIC FEATURES

(NASIS pedons)
kind N top bottom thick
argillic horizon 59 3-9-25 48-65-93 34-53-84
cambic horizon 6 2-3-8 17-22-48 14-15-45
lithic contact 19 57-85-110 200-200-203 108-120-144
mollic epipedon 1 0-0-0 26-26-26 26-26-26
ochric epipedon 59 0-0-1 3-8-20 3-8-20
paralithic contact 54 49-66-94 60-89-200 7-17-140

MORPHOLOGIC DOCUMENTATION

musym pedon_id taxonname taxon_kind pedon_type depth depth.class part_size_class tax_subgroup missing.genhz
6145 10CKS001 Loafercreek series correlates to named soil 54 mod.deep fine-loamy ultic haploxeralfs some
7085 09BAH008 Loafercreek series correlates to named soil 68 mod.deep fine-loamy ultic haploxeralfs some
7085 09CKS010 Loafercreek series correlates to named soil 66 mod.deep fine-loamy ultic haploxeralfs none
7085 10BJM021 Loafercreek series correlates to named soil 60 mod.deep fine-loamy ultic haploxeralfs none
7085 10BJM055 Loafercreek series correlates to named soil 54 mod.deep fine-loamy ultic haploxeralfs none
7085 10BJM059 Loafercreek series correlates to named soil 76 mod.deep fine-loamy ultic haploxeralfs none
7085 10BJM060 Loafercreek series correlates to named soil 71 mod.deep fine-loamy ultic haploxeralfs some
7085 10BJM061 Loafercreek series correlates to named soil 56 mod.deep fine-loamy ultic haploxeralfs none
7085 10MJE011 Loafercreek series correlates to named soil 60 mod.deep fine-loamy ultic haploxeralfs none
7085 10MJE045N Loafercreek series within range of map unit 82 mod.deep fine-loamy ultic haploxeralfs none
7085 10MJE079N Loafercreek series correlates to named soil 89 mod.deep fine-loamy ultic haploxeralfs none
7085 11CKS028 Loafercreek series correlates to named soil 72 mod.deep fine-loamy ultic haploxeralfs none
7085 11DEB019 loafercreek series within range of map unit 68 mod.deep fine-loamy ultic haploxeralfs none
7085 11DEB052 Loafercreek series undefined observation 80 mod.deep fine-loamy ultic haploxeralfs none
7085 11DEB087 Loafercreek series within range of map unit 57 mod.deep fine-loamy ultic haploxeralfs none
7085 11MJE001N Loafercreek series correlates to named soil 90 mod.deep fine-loamy ultic haploxeralfs none
7085 11PDM001 Loafercreek series correlates to named soil 64 mod.deep fine-loamy ultic haploxeralfs none
7085 2013CA6303041 Loafercreek taxadjunct taxadjunct to the series 60 mod.deep fine-loamy mollic haploxeralfs none
7086 07SKC003 LOAFERCREEK series correlates to named soil 64 mod.deep fine-loamy ultic haploxeralfs none
7086 08AMS011 Loafercreek series correlates to named soil 55 mod.deep fine-loamy ultic haploxeralfs none
7086 09CKS001 Loafercreek series TUD pedon 97 mod.deep fine-loamy ultic haploxeralfs none
7086 09CKS006 Loafercreek correlates to named soil 58 mod.deep fine-loamy ultic haploxeralfs none
7086 09CKS036 Loafercreek series correlates to named soil 65 mod.deep fine-loamy ultic haploxeralfs some
7086 10CKS007 Loafercreek series correlates to named soil 75 mod.deep fine-loamy ultic haploxeralfs some
7086 10CKS009 Loafercreek series correlates to named soil 76 mod.deep fine-loamy ultic haploxeralfs some
7086 10CKS011 Loafercreek series correlates to named soil 72 mod.deep fine-loamy ultic haploxeralfs some
7086 10MJE016 Loafercreek series correlates to named soil 80 mod.deep fine-loamy ultic haploxeralfs some
7086 10MJE019N Loafercreek series correlates to named soil 63 mod.deep fine-loamy ultic haploxeralfs none
7086 10MJE020 Loafercreek taxadjunct undefined observation 54 mod.deep fine-loamy typic haploxerepts none
7086 10MJE038N Loafercreek series correlates to named soil 50 mod.deep fine-loamy ultic haploxeralfs none
7086 11KWJ023 Loafercreek series correlates to named soil 54 mod.deep fine-loamy ultic haploxeralfs some
7086 11KWJ026 loafercreek series correlates to named soil 89 mod.deep fine-loamy ultic haploxeralfs none
7086 11MJE021N Loafercreek correlates to named soil 73 mod.deep fine-loamy ultic haploxeralfs none
7086 11MJE022N Loafercreek series correlates to named soil 52 mod.deep fine-loamy ultic haploxeralfs some
7086 11MJE023N Loafercreek series undefined observation 67 mod.deep fine-loamy ultic argixerolls some
7086 2012CA6302046 LOAFERCREEK series correlates to named soil 60 mod.deep fine-loamy ultic haploxeralfs none
7086 2013CA6302026 Loafercreek series 59 mod.deep fine-loamy ultic haploxeralfs none
7086 JAD 357 67-5-21X Loafercreek 56 mod.deep some
7086 S09CA009002 Loafercreek taxadjunct to the series 97 mod.deep fine-loamy ultic haploxeralfs all
7087 10BJM012 Loafercreek cool series correlates to named soil 70 mod.deep fine-loamy ultic haploxeralfs some
7087 10CKS030 Loafercreek cool series correlates to named soil 52 mod.deep fine-loamy ultic haploxeralfs some
7087 10CKS031 Loafercreek cool series correlates to named soil 54 mod.deep fine-loamy ultic haploxeralfs some
7087 10MJE001 Loafercreek series correlates to named soil 60 mod.deep fine-loamy ultic haploxeralfs some
7087 2012CA6303021 Loafercreek series correlates to named soil 62 mod.deep fine-loamy ultic haploxeralfs none
7087 2012CA6303023N Loafercreek series correlates to named soil 73 mod.deep fine-loamy ultic haploxeralfs none
7088 09CKS021 Loafercreek series correlates to named soil 57 mod.deep fine-loamy ultic haploxeralfs some
7088 09CKS024 Loafercreek series correlates to named soil 93 mod.deep fine-loamy ultic haploxeralfs none
7088 10BJM044 Loafercreek series correlates to named soil 40 shallow fine-loamy ultic haploxeralfs none
7088 10CKS015 Loafercreek series correlates to named soil 80 mod.deep fine-loamy ultic haploxeralfs some
7088 10CKS032 Loafercreek series correlates to named soil 70 mod.deep fine-loamy ultic haploxeralfs some
7088 10MJE005 LOAFERCREEK series correlates to named soil 71 mod.deep fine-loamy ultic haploxeralfs none
7088 10MJE025 Loafercreek series correlates to named soil 56 mod.deep fine-loamy ultic haploxeralfs none
7088 11KWJ005 Loafercreek series correlates to named soil 45 shallow fine-loamy ultic haploxeralfs some
7088 11KWJ030 Loafercreek series correlates to named soil 52 mod.deep fine-loamy ultic haploxeralfs none
7088 2012CA6302033 LOAFERCREEK series correlates to named soil 75 mod.deep fine-loamy ultic haploxeralfs none
7205 S2007CA109005 LOAFERCREEK series TUD pedon 99 mod.deep fine-loamy ultic haploxeralfs all
7211 10BJM051 Loafercreek series correlates to named soil 60 mod.deep fine-loamy ultic haploxeralfs none
8034 2012CA6303002 Loafercreek taxadjunct taxadjunct to the series 48 shallow fine-loamy mollic haploxeralfs all
NOSYM 300J LOAFERCREEK series representative pedon for component 74 mod.deep fine-loamy ultic haploxeralfs all
NOSYM 716Q LOAFERCREEK series OSD pedon 79 mod.deep fine-loamy ultic haploxeralfs all
NOSYM S2000CA007009 LOAFERCREEK series representative pedon for component 74 mod.deep fine-loamy typic haploxeralfs all
NOSYM S2000CA007012 Loafercreek series OSD pedon 79 mod.deep fine-loamy ultic haploxeralfs all

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